A temperature feasibility constraint is an important part of multistream heat exchanger (MSHE) modeling. However, temperature feasibility of an MSHE model makes a numerical issue when a physical property package is used to obtain highly accurate temperature-enthalpy relationships in equation-oriented modeling environment. To resolve the issue, this study proposes a new MSHE model with enthalpy feasibility using the fact that enthalpy is a monotonically increasing function of temperature. A natural gas liquefaction process, called a single mixed refrigeration process, is optimized using the proposed MSHE model under an equation-oriented modeling environment with a physical property package as a case study.
Bibliographical noteFunding Information:
This research was supported by a grant from the LNG Plant R&D Center funded by the Ministry of Land, Infrastructure and Transport ( MOLIT ) of the Korean government and also respectfully supported by Engineering Development Research Center (EDRC) funded by the Ministry of Trade, Industry & Energy ( MOTIE ).
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Computer Science Applications